Wordle

I read about this on a women's cycling forum I subscribe to and thought it was kinda neat. You input a URL of your choice (or just a bunch of random words), and it creates a collage from the most common words in it, with the various sizes representing how often the word appears. You can then change the colors, layout, font, etc. I input this blog, and here's the result (it's small, so click on the picture for the full-size image):

Check it out here:  http://www.wordle.net/